What versions of LDAP does uPortal support?

uPortal supports both version 2 and version 3 of LDAP by virtue of Java's support for these versions in JNDI. JNDI will first try protocol version 3 and if that fails with the appropriate error code, then it tries LDAP version 2. None of uPortal's LDAP-using components put a value for "java.naming.ldap.version" into the environment.